Ecospace occupation of small-bodied mammaliaform communities through time. (A) EDisp and ERich of small-bodied mammaliaform communities from the Mesozoic, Eocene, and Recent. (B) Exemplar plots of ecospace occupation of the extant, small-bodied mammalian communities from the eight vegetation types. (C) Plots of ecospace occupation of two Jurassic, two Cretaceous, and one Eocene small-bodied mammaliaform communities with colors corresponding to tooth types. (D) An example of ecospace occupation of three extant, small-bodied mammalian species. Each exemplar plot was generated by bootstrapping the eco-cells in each environmental type. See SI Appendix, Materials and Methods for details.